Liv Tyler: No Rock 'n' Roll Lifestyle for Son Milo

The Incredible Hulk star won't be following in the footsteps of rocker Steven Tyler – or the man she called dad for a decade, musician Todd Rundgren.

""I don't want to surprise or shock," Tyler tells the July issue of British Cosmopolitan . "And I don't have any urge to run naked along a beach or get drunk at a party."

And since separating from her husband of five years, Spacehog singer Royston Langdon, the 30-year-old says her life as a single mom to son Milo, 3, has become even more domestic.

"I live quietly in New York, out of the public eye. I don't go out much," she explains. "My favorite nights are staying in watching TV or going to a movie and eating popcorn."

Tyler had a decidedly rock 'n' roll childhood with mom Bebe Buell (a former Playboy centerfold). She was raised as the daughter of rocker Rundgren – until discovering, in 1988, that the Aerosmith frontman was her real biological father.

"I love my parents, but I've never wanted my son Milo, who's three now, to be brought up in the same way as me," she tells the mag. "I'm not attacking them for it, I just wanted a different way for my son."

As for her own unconventional upbringing, Tyler admits she's no longer close to Rundgren. "The saddest thing about the whole episode is that Todd is not part of our lives now," she says. "I think he was unhappy with me learning the truth. He was a wonderful father to me."

And Tyler? "I'm definitely critical of him sometimes," she says. "Like when his pants are too tight!"